Physical Review A
Shannon entropy and the eigenstates of the single-mode squeeze operator
C. G. Bollini, L. E. Oxman
Abstract
The interaction Hamiltonian for the degenerate parametric amplifier leads to an eigenvalue equation which can be solved. The solution is used to construct the propagation kernel for the state vectors. We can then follow the evolution of the squeezed variable and its conjugate one. Also the changes of entropies during the process can be followed without difficulties.